[单选题]塔机在每次进行附着或顶升作业完毕后,应由( )对附着装置及塔机整体状况进行验收。
A.建设单位
B.安装单位
C.产权(出租)单位
D.制造厂商

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Most of us can find is minutes or half an hour each day for some specific regular activity. For example, one famous surgeon always made it a rule to spend at least 15 minutes on general reading before he went to sleep each day. Whether he went to bed at 10 p. m. or 2:30 a. m. made no difference.
Nearly all "speed reading" courses have a "pacing" element -- some timing device which lets the students know how many words a minute he is reading. You can do this simply by looking at your watch every 5 to 10 minutes and noting down the page number you have reached.
Obviously there is little point in increasing your reading speed if you do not understand what you are reading. If you find you have lost the thread of the story, or you cannot remember clearly the details of what was said, re-read the section or chapter.
Take four or five pages of an interesting book